And you thought Ace Ventura's butt birth rhino prop fetched a lot.Entertainment memorabilia dealer Propstore sold a light-up C-3PO head for just over $1 million at their spring live auction this week. It’s so far the biggest sale of the auction, which concludes today, March 27.Sold for $1,058,400, the C-3PO head was worn by actor Anthony Daniels in …